Iron or nosing for concrete work.



E. W. THOMPSON. IRON OR NOSING POR CONCRETE WORK. APPLI OATION FILEDNOV. 14,1910. 1,011374.. 1

Patented Dec. 12, 1911 EVERT W. THOMPSON, OF NILES, MICHIGAN.

IRON OR NOSING FOR CONCRETE WORK.

Specifieation of Letters Patent.

Patented Dec. 12, ieri.

Application filed November 14, 1910. erial No. 592320.

To all whom it may cancer nn h t i Be it known that I, EVERT 7.THOMPSON,

Niles, Michigan, have invented certain new and useful Improvements inIrons or Nosngs for Concrete lVork, of which the following is as'pecfieation.

This invention relates to improvements in rons or nosings for concretestairs, columns, etc.

My improved corner iron is especially designed by me for use as a corneriron or nosng for concrete stairs, curbs, columns, pe's, and otherconcrete structural Work.

The main objects of my invention are to provide an improved corner ironor nosing for concrete work, such as 'stairs, curbs, columns, piers andvarious other concrete st-ructures, which is very secure and one whichserves, in a measure, as a reinforcing element or member, and iseconoical to produce and easily placed.

Further objects, and' objects relatng to a citizen of the United States,residing at structural details, will definibely appear from the detaileddescription to follow.

I acconplish the objects of my invention by thedevices and means'described in the following specication. i

The invention is clearly defined and ponted out in the claims. i

A structure, which is a preferred embodiment of my invention, isclearlyillustrated in the accompanying drawing, 'forming a part of thisspecification, in which:

Figure 1 is adetail perspective View of a stair embo'dying the featuresof my invention. Fig. 2 is an inside perspective view of my improved.corner iron or nosing.

3 is a det-ail of a column embodying myimproved corner iro'n. V

In the drawing, similar reference numerals refer to similar partsthroughout the several views.

Referring to the drawing, 1 represents the body of a concrete stairstructure, in connection with which my improved corner or nosing isshown.

-My improved corner iron 2 is angled in cross section, the angle beingrounded,'as shown. On each edge is an inturned flange 3, the flangesbeing disposed substantially at right angle to each other, as is shown.On

` these fianges are laterally-projecting arms'4,

the arms being struck outwardly from the edges of the flanges. Thesearms are given a quarter twist at 5, adjacent to the flanges,

so that they lie in planes substantially parallel with the sdes or thesui-faces of the concrete body in which they are embedded. The corneriron is preferably embedded in the concrete so that its outer surface issubstantially flush with the surfaces of the concrete body. The concretematerial filling the corner iron and embedding the flanges thereof andthe arms on the flanges, the arms are very firmly attached and do nottend to cause the concrete to split. fact, so securely at-t-aohed as toserve as a reinforcing element.

In Fig. 3 I show my improved corner iron applied to a column.

My improved 'corner iron or nosing is very simple in structure andeconomical to produce, both in the matter of 'the amount of material andlabor, and, further, it is easily applied during the process ofConstruction. The body of the corner iron or 'nosing can be curved, asindicated, or provided ,with a' They are, m

1. The combination with a concrete body, i

' of a corner iron or nosing piece having inturned fianges at its edgesdisposed' in planes substantially at right angles to each other, saidflanges having -slaterally-projecting, dove-tailed arms struck out fromtheir edges, the arms of the two flanges being disposed in a zigzagrelation, and having quarter twists therein so that .they lie in planessub stantially parallel with the surfaces of the concrete body in whichthe iron is embedded so that its 'outer surface is substantially flushwith the surfaces of said body.

2. The combination with a concrete body, of a corner iron or nosingpiece', having in- A turned flanges at its edges disposed in planessubstantially at right angles to each other and with the surfaces of thebody in which they are embedded, said flanges having laterally-projecting arms struck out from ther edges, the arms havingquarter twists therein so that'they lie in planes substantially at rightangles to each other, and substantially parallel with the surfaces ofthe concrete body in which the iron is embedded so that its outersurface is substantially flush wth the surface of said body.

3. As an article of manufacture, a corner iron or osing piece havinginturned flanges at its edges disposed in planes substantally at rightangles to each other and having laterally-projecting dove-tailed' shapedarms -struck longitudinally from their edges, said 'arms having twiststherein, the arms of the two flanges being disposed in a zigzagrelation.

4:. The eombination'with of a corner or nosing piece having inturnedflanges embedded in said body, said flanges having outwardly-projectingarms on their edges, the arms being disposed substantially at rightangles to the flanges and being struck longitudinally from the edges ofthe fianges and having twsts therein, for the purpose specified. v

5. As an article of manufacture, a corner iron or nosing piece havin'inturned narrow flanges at 'its edges, said anges having lata concretebody;

erally-projecting arms strnck lqngitudinally from their edges, thelength of the arms being materially greater than the width of saidfianges.

6. As an article of manufacture, a corner iron or nosing piece, havinginturned narrow flanges at its edges, said flanges having laterallyprojecting dove-tailed shaped arms struck longtudinally from theiredges, said arms having twists therein.

In witness Whereof, I have hereunto set m'y' hand and' seal inthepresen'ce of two witnesses. I

EVERT W. THOMPSON; [L. 5.] Witnesses: I

WILLIAM DALY, WM. H. MCCLENAHEN.

